What Is License Plate Recognition Software?

ALPR Software

Executive Summary:

A camera may convince unscrupulous people to let go of their bad intentions. Additionally, these gadgets can be extremely useful. A camera may convince unscrupulous people to let go of their bad intentions. Additionally, gadgets can also be extremely useful. Aside from reducing crime, license plate recognition software, LPR technology has many applications.

Security cameras are the most effective theft deterrent in a survey of 422 burglars in prison. In addition, 60% of the offenders who responded to the study claimed they would pick a different location if their target had security cameras.

In the US, vehicles are used in over 70% of crimes, and license plates are public records. Therefore, using an automated license plate recognition (ALPR) system by the police can considerably help them apprehend offenders and administer justice. This page will thoroughly explain what ALPR is.

Licence Plate Recognition Services

What is the LPR System?

License plate recognition (LPR) is the automated method that recognizes a vehicle by photographing and scanning its license plate. license plate recognition software (automated license plate recognition) uses quick, computer-controlled camera systems to read license plates.

They implement industry 4.0 techniques, including computer vision technology, which can read license plates much faster than cameras or human operators. Traffic enforcement, threat detection, traffic control, access control, toll collecting, parking management, and other uses call for using ALPR systems.

ALPRs are video analytics with sensors. Any number plate number that comes into their range of sight is automatically captured. Additionally, these photos’ time, date, and location are stamped. ALPR cameras can be either stationary or mobile.


Vehicle license plates are scanned using license plate recognition software. Authorized staff can view this data uploaded to a central server using the appropriate login credentials.

We will examine an ALPR system’s operation in the section after this.


How does LPR work?

The optical character recognition (OCR) and image processing steps in license plate recognition technology are used to take photos of license plates using cameras.

The characters on a license plate are transformed into alphanumeric codes during OCR to be compared against a database.

Algorithms are used in image processing to analyze the images and decide whether specific requirements, such as the plate’s size or form, have been met. To identify the vehicle, the LPR or ANPR system verifies the license plate data against a database of known plates.

license plate recognition software can identify vehicles, track them in real-time, and collect data for later use.

Most automatic license plate recognition systems are built to operate in any illumination and have an accuracy rate of more than 95%. Still, another intriguing aspect of LPR systems is the access control feature they offer.

With this capability, ANPR systems can be connected to access control systems for gates, doors, and parking lots to automatically grant or prohibit entry depending on the license plate numbers of approaching vehicles.

Phases of Licence Plate Recognition

The four phases of license plate recognition are image capture, pre-processing, license plate location, character segmentation, feature extraction, character recognition, and post-processing.

  • Image Capture

Image acquisition in LPR refers to taking a picture of a license plate. Many techniques, such as cameras mounted on moving objects or structures or handheld devices, can be used.

Infrared and visible light cameras are the two main types of cameras used in LPR. Because they are made to operate in low light, infrared cameras can record license plates even when not lit up. However, visible light cameras are utilized in well-lit environments because they can record more detail than infrared cameras.

To obtain high accuracy rates, cameras used in LPR systems must adhere to some specifications. For example, the camera must provide a clean image regardless of lighting conditions and have a high resolution to catch all the license plate features.

  • Pre-Processing

The preparation of the image for processing is the initial stage of LPR. Camera photos are modified in this step to boost contrast and lessen noise.

  • Identification Plate Location

In the subsequent stage, algorithms are used by license plate recognition to identify license plates in the image. This entails identifying the license plate’s size, form, and location and eliminating any remaining background noise and extraneous objects.

  • Character division

The third stage of LPR systems’ operation involves algorithm segmenting characters on the license plate. This phase guarantees that the LPR system can reliably recognize the characters on the license plate image.

  • Highlights Extraction

The image of the license plate is used in this stage to extract features using LPR algorithms. This entails examining each character’s form, size, and orientation and contrasting it with a database of recognized properties.

  • Recognition of Characters

license plate recognition software algorithms compare the retrieved features to a database of known license plate numbers in the final stage to identify and recognize the license plate.

  • Processing after

The last phase in the LPR license plate recognition process is image post-processing. This stage entails examining the LPR system’s findings and acting appropriately in light of them.

An alert can be sent when a license plate is recognized, the license plate information can be stored in a database, or the vehicle can be routed to a certain place for post-processing.

Post-processing is a crucial stage in LPR since it enables LPR systems to be tailored to each organization’s unique needs. LPR systems can be set up to match the particular needs of each application by modifying the post-processing settings.



Systems automatically identifying license plates can be useful for any organization trying to boost security and productivity and cut expenses.

LPR systems are offered in a range of configurations and sizes, enabling organizations to select the LPR system that best suits their requirements.

At Folio3, we are experts in license plate recognition technology and provide a range of LPR systems to suit the various requirements of our customers. Contact us immediately to learn more about LPR and how it might be used for your particular needs.

Licence Plate Recognition Services
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